<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
</head>
<body>
<form method="post" action="calc">
    <div style ="text-align: center;margin-top: 100px;background-color:lightgoldenrodyellow">
        <h1>计算器</h1>
        数字1：<input id="n1" name="number1" type="number"><p></p>
        数字2：<input id="n2" name="number2" type="number"><p></p>
        <input value=" 提 交 " type="submit">
    </div>
</form>
</body>
</html>